The invention relates to a method (300) for external monitoring of power electronics (450), wherein the power electronics (450) are actuated by means of first control electronics (460) and the method (300) is carried out by independent, second control electronics (420). The method comprises the following steps: determining (320) a parameter (P); determining (330) the difference (D) of between the determined parameter (P) and a target value (S); actuating (340) the power electronics (450) if the amount of the difference (D) exceeds a threshold (G).
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method ( 300 ) for external monitoring of power electronics ( 450 ), wherein the power electronics ( 450 ) are actuated by a first control electronics ( 460 ) and the method ( 300 ) is carried out by independent, second control electronics ( 420 ), having the steps of: determining ( 320 ) a parameter (P); determining ( 330 ) the difference (D) between the determined parameter (P) and a target value (S); actuating ( 340 ) the power electronics ( 450 ) if the amount of the difference (D) exceeds a threshold (G); wherein the step of actuation ( 340 ) of the power electronics ( 450 ) comprises a specification ( 342 ) of a control requirement (A) value for the first control electronics ( 460 ).
2. The method as claimed in claim 1 , wherein the control requirement (A) is specified to the first control electronics ( 460 ) by a bus message.
3. The method as claimed in claim 1 , wherein the step of actuation ( 340 ) of the power electronics ( 450 ) comprises the switching off ( 344 ) of the power electronics ( 450 ) if the specified control requirement (A) is incorrectly implemented.
4. The method as claimed in claim 1 , wherein testing ( 350 ) the method comprises: switching off ( 360 ) the power electronics ( 450 ) and receiving ( 370 ) a signal (Si) from the first control electronics ( 460 ) as a reaction to the switch-off ( 360 ).
5. The method as claimed in claim 4 , wherein the switching off ( 344 ), ( 360 ) of the power electronics ( 450 ) comprises switching an enable line of the power electronics to low.
6. The method as claimed in claim 1 , wherein the first control electronics ( 460 ) are assigned to the power electronics ( 450 ).
7. The method as claimed in claim 1 , wherein the power electronics ( 450 ) are an inverter or a DC voltage converter.
8. The method as claimed in claim 1 , wherein the second control electronics ( 420 ) are assigned to a control device ( 410 ), wherein the control device ( 410 ) is independent of the power electronics ( 450 ).
9. The method as claimed in claim 1 , wherein the first control electronics ( 460 ) and the power electronics ( 450 ) are arranged together inside one housing.
10. The method as claimed in claim 1 , wherein the second control electronics ( 420 ) are arranged inside a housing of the control device ( 410 ), wherein the control device ( 410 ) is independent of the power electronics ( 450 ).
11. A system for external monitoring of power electronics ( 450 ), wherein the power electronics ( 450 ) are actuated by a first control electronics ( 460 ), wherein the system comprises an independent second control electronics ( 420 ) configured to: determine ( 320 ) a parameter (P); determine ( 330 ) the difference (D) between the determined parameter (P) and a target value (S); actuate ( 340 ) the power electronics ( 450 ) if the amount of the difference (D) exceeds a threshold (G); wherein the actuation of the power electronics ( 450 ) comprises a specification ( 342 ) of a control requirement (A) value for the first control electronics ( 460 ).
12. A device ( 400 ) for external monitoring of power electronics ( 450 ), wherein the power electronics ( 450 ) are actuated by a first control electronics ( 460 ), wherein the device ( 400 ) comprises an independent second control electronics ( 420 ) that are configured to determine a parameter (P), a difference (D) between the determined parameter (P) and a target value (S), and to actuate the power electronics ( 450 ) if the magnitude of the difference (D) exceeds a threshold value (G) wherein actuating the power electronics ( 450 ) comprises a specification ( 342 ) of a control requirement (A) value for the first control electronics ( 460 ).
13. The device ( 400 ) as claimed in claim 12 , wherein the device ( 400 ) is part of a drivetrain ( 100 ).
14. The device ( 400 ) as claimed in claim 13 , wherein the drivetrain ( 100 ) is part of a vehicle ( 200 ).
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
April 25, 2017
November 10, 2020
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.